From: Jiang Liu <jiang.liu@linux.intel.com>
Date: Mon, 6 Jan 2014 06:18:10 +0000 (+0800)
Subject: iommu/vt-d: fix a race window in allocating domain ID for virtual machines
X-Git-Tag: v3.14-rc1~50^2^3~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18d99165d3ebe5e365de57bcc673901d754c7142;p=pandora-kernel.git

iommu/vt-d: fix a race window in allocating domain ID for virtual machines

Function intel_iommu_domain_init() may be concurrently called by upper
layer without serialization, so use atomic_t to protect domain id
allocation.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
---

Reading git-diff-tree failed